@import url("tokens.css");

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-text);
  font-size: var(--text-body);
  line-height: 1.47059;
  letter-spacing: -0.022em;
  color: var(--color-text-primary);
  background: var(--color-bg-light);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, svg, video {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: var(--color-link);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-apple);
}

a:hover {
  text-decoration: underline;
}

button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

ul, ol {
  list-style: none;
}

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.hidden {
  display: none !important;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ── Header ── */

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-height);
  background: var(--color-glass);
  backdrop-filter: var(--header-blur);
  -webkit-backdrop-filter: var(--header-blur);
  border-bottom: 1px solid var(--color-border);
}

.site-header--dark {
  background: var(--color-glass-dark);
  border-bottom-color: var(--color-border-dark);
}

.site-header--dark .site-nav__link,
.site-header--dark .site-nav__logo-text {
  color: var(--color-text-on-dark);
}

.site-header--dark .site-nav__link:hover {
  color: var(--color-text-on-dark);
  opacity: 0.8;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--content-wide);
  height: 100%;
  margin: 0 auto;
  padding: 0 clamp(1rem, 4vw, 2rem);
}

.site-nav__logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--color-text-primary);
}

.site-nav__logo:hover {
  text-decoration: none;
  opacity: 0.85;
}

.site-nav__logo img {
  height: 24px;
  width: 24px;
}

.site-nav__links {
  display: none;
  align-items: center;
  gap: 2rem;
}

@media (min-width: 768px) {
  .site-nav__links {
    display: flex;
  }
}

.site-nav__link {
  font-size: 0.875rem;
  color: var(--color-text-primary);
  opacity: 0.88;
  text-decoration: none;
  transition: opacity var(--duration-fast) var(--ease-apple);
}

.site-nav__link:hover,
.site-nav__link.is-active {
  opacity: 1;
  text-decoration: none;
}

.site-nav__link.is-active {
  color: var(--color-accent);
}

.site-nav__actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.site-nav__action {
  font-size: 0.8125rem;
  color: var(--color-text-primary);
  text-decoration: none;
  opacity: 0.88;
}

.site-nav__action:hover {
  opacity: 1;
  text-decoration: none;
}

.site-nav__menu-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  color: var(--color-text-primary);
}

@media (min-width: 768px) {
  .site-nav__menu-btn {
    display: none;
  }
}

.site-nav__menu-icon {
  width: 18px;
  height: 2px;
  background: currentColor;
  position: relative;
  transition: background var(--duration-fast);
}

.site-nav__menu-icon::before,
.site-nav__menu-icon::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: currentColor;
  transition: transform var(--duration-fast) var(--ease-apple);
}

.site-nav__menu-icon::before { top: -6px; }
.site-nav__menu-icon::after { top: 6px; }

.site-nav__menu-btn[aria-expanded="true"] .site-nav__menu-icon {
  background: transparent;
}

.site-nav__menu-icon[aria-expanded="true"]::before,
.site-nav__menu-btn[aria-expanded="true"] .site-nav__menu-icon::before {
  transform: translateY(6px) rotate(45deg);
}

.site-nav__menu-icon[aria-expanded="true"]::after,
.site-nav__menu-btn[aria-expanded="true"] .site-nav__menu-icon::after {
  transform: translateY(-6px) rotate(-45deg);
}

.site-mobile-menu {
  display: none;
  position: fixed;
  inset: var(--header-height) 0 0 0;
  background: rgba(251, 251, 253, 0.96);
  backdrop-filter: var(--header-blur);
  -webkit-backdrop-filter: var(--header-blur);
  padding: 2rem;
  z-index: 999;
}

.site-mobile-menu.is-open {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.site-mobile-menu a {
  font-size: 1.75rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
  padding: 0.75rem 0;
  text-decoration: none;
  border-bottom: 1px solid var(--color-border);
}

.site-mobile-menu a:hover {
  color: var(--color-accent);
  text-decoration: none;
}

/* ── Footer ── */

.site-footer {
  background: var(--color-bg-gray);
  padding: var(--section-pad) clamp(1rem, 4vw, 2rem) 2rem;
}

.site-footer__legal {
  max-width: var(--content-wide);
  margin: 0 auto 2rem;
}

.site-footer__legal p {
  font-size: var(--text-caption);
  line-height: 1.5;
  color: var(--color-text-secondary);
  margin-bottom: 0.75rem;
}

.site-footer__divider {
  max-width: var(--content-wide);
  margin: 0 auto 1.25rem;
  height: 1px;
  background: var(--color-border);
}

.site-footer__bottom {
  max-width: var(--content-wide);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  font-size: var(--text-caption);
  color: var(--color-text-secondary);
}

.site-footer__bottom a {
  color: var(--color-text-secondary);
}

/* ── Reveal animation ── */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity var(--duration-slow) var(--ease-apple),
    transform var(--duration-slow) var(--ease-apple);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}